Light-Induced Chemical Reactions

Sunlight not absorbed in the thermosphere passes through the mesosphere, which is about 35 km thick, with little absorption. Consequently, there are no important light-induced chemical reactions in the mesosphere. 

In addition to protection from breakage, the brown plastic bottles in which hydrogen peroxide is commonly sold enhance the shelf-life of this product. Packaging plays an important role in limiting the light-induced chemical reactions of hydrogen peroxide. 

Figure 1.2 Energy (E)-reaction coordinate (RC) diagram of ground state (dark) and light-induced chemical reactions...

Pathways of Dark and Light-induced Chemical Reactions... 

Light-induced chemical reaction A type of chemical reaction that occurs when light is absorbed. 

Within the context of supramolecular devices, re-emission of the radiation by luminescence is of interest in sensing and signalling applications, while chemical reactions are of interest in applications such as molecular switches and photocatalysis. Strictly speaking absorption and re-emission type processes are termed molecular photophysics while light-induced chemical reactions or chemical processes are termed photochemistry . 

The photochemical and photophysical properties of the [MgXiJ2" ions have been extensively studied because they provide a new class of photoreceptors for light-induced chemical reactions that are chemically very stable and undergo facile electron-transfer reactions in their ground and excited states. 

Photolysis a light-induced chemical reaction involving... 

Adsorption. The concentration of adsorbed species in snow is determined by snow SSA, temperature and by the partial pressure of the species in snowpack interstitial air. Thus, the reduction in SSA usually observed during metamorphism will lead to the emissions of adsorbed species. Adsorbed species are also readily available for dark and light-induced chemical reactions. ... 

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